stemco, a division of senasys
1/2″ Manual Reset Snap Disc Thermostats
The 432 Series is our 1/2″ Manual Reset Snap Disc Thermostats. The 1/2″ manual reset snap disc thermostats are ideally suited for applications where you want to call special attention to a specific temperature malfunction. The 432 series can be used as a safety limit that will break on temperature rise. The thermostat must be manually reset once tripped requiring a human to intervene once tripped.
Designed & manufactured to meet requirements of original equipment manufacturers worldwide.
Senasys products are 100% tested before they leave our facilities.
Senasys products are UL/cUL Recognized.
made in u.s.a.
Senasys products are designed & manufactured in Eau Claire, Wisconsin, U.S.A.
The 432 Series is our 1/2″ manual reset snap disc. This series is ideally suited for applications where you want to call special attention to a specific temperature malfunction. The 432 series can be used as a safety limit that will break on temperature rise. Our manual reset thermostat switches are ideal when you want to call special attention to a temperature malfunction. Because the switch needs to be manually reset, a human must interact with the switch and solve the problem before the equipment or appliance can work again.
The 432 thermostats use a bimetal disc for snap action, providing positive and instantaneous opening of the electric circuit. The 432 series can be used as a safety limit that will break on temperature rise. Once tripped, the thermostat can be reset once the temperature has dropped a minimum of 25°F. The reset differential will increase as the specified break temperature increases.
- 1/2″ Bi-Metal Snap Action Disc
- Manual Reset
- Breaks on temperature rise
- Single-pole, Single-throw (SPST)
- 15 Amps @ 120VAC; 10 Amps @ 240VAC, 6,000+ cycles
- Temperature range of 100°-350°F, differential temperature ±25°F
- Bi-Metal is available enclosed, or exposed for a faster reaction
- Small Footprint
- Variety of mounting options, such as pipe and stud mounts.
- Variety of terminal configurations available.
- UL Listed
- Made in U.S.A.
For a more economical solution, Senasys has built relationships with overseas suppliers to provide our customers thermostats at a lower cost, with the same high quality as our snap disc thermostats built in the U.S.A.
Select from a variety of mounting options, including pipe and stud mounts.
Large Surface Mount
Airstream (Extended Cup) Mount
Large Airstream (Extended Cup) Mount
Loose Hold Bracket
Threaded Stud Mount
NPT Stud Mount
Our 432 series is available with a variety of terminal options. Our standard terminals are 1/4″ Quick Connect Terminals.
A variety of terminal bends & orientations are also available. Our standard terminal bends are 0°, 45° or 90°.
Learn more about our terminal options available here.
For other custom options, please contact us.
1/4″ Quick Connect
3/16″ Quick Connect
Standard Temperature Options
Below is a list of our common, off the shelf, bi-metal temperature options. Custom temperature options available. Please contact us.
Open: 125°F ±5°F Close: Manual
Open: 160°F ±8°F Close: Manual
Open: 200°F ±6°F, Close: Manual
Open: 220°F ± 5°F Close: Manual
Open: 275°F ±10°F Close: Manual
Our 432 series 1/2″ manual reset snap disc thermostats are found in a variety of applications. Choose a category below to learn more.
Frequently Asked Questions
YOUR QUESTIONS, ANSWERED.
A snap disc temperature switch that opens (limit) when temperature rises in a system.
It’s simple. Press the red button!
These temperature switches are used when the switch should NOT reset once the system has shut down and returned to ambient temperature. Someone needs to interfere with the system before safely operating again.
For small quantities, we can build anything from 0°F to 350°F. Contact us for higher temperatures.
One of the standout characteristics of an exposed cap is its’ use of a black exposed disc. This disc serves as a crucial element in sensing temperature fluctuations swiftly, enabling the switch to respond rapidly to environmental changes. This quick thermal response is especially important in applications where precise temperature control is paramount, such as in thermostats, industrial control systems, and appliances. The exposed caps are available for all non-epoxied snap disc thermostats within the Senasys catalog.
For more information on exposed snap disc caps, click here.
One of the key advantages of gold contacts is their significantly lower contact resistance when compared to high-current silver contacts. This low resistance translates into improved electrical conductivity, allowing for smoother and more reliable signal transmission. This is especially important in applications where even the slightest interruption or distortion in the signal could lead to critical errors or malfunctions.
For more information on when gold contacts should be used, click here.
A snap disc thermostat does not use any power. Instead it acts as a circuit breaker for a system.
The body of the switch is plastic, and the mounting cap is either steel, aluminum, or brass.
We are certain of our position at the top so we’re comparing our product with other top products in the marketplace today.
1/2″ Bi-Metal Snap Disc
Breaks on Temp. Rise
100°F to 350°F Temperature Range
15 Amps @ 120VAC
Single Pole, Single Throw
Surface, Pipe & Stud Mount Options
Variety of Terminal Options
Made in U.S.A.
Build A Thermostat
Follow the below nomenclature guide to determine the 432 series manual reset thermostat to meet your application requirements.
Request A Quote
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